Propeller



Dec. 29, 1931. BAGEL 1,838,471'

PROPELLER Filed March 5, l93l 2 Sheets-Sheet 1- rive/Y5 Patented Dec. 29, 1931 aoznr BAG-EL, or omoae inmnoxs rnornnnnn I Application filed ltarch a, 1931. Serial No. 519335.

My'invention relates to improvements in propeller construction and is more particularly concerned with the provision of an improvedpropeller provided with blades that rotate around a common axis, presenting their faces transversely duringapartof their rotary motion and presenting their face to the plane of rotation-during other partsof their rotation. L 1

Theinventionhas reference generally to an improved construction of a feathering paddle-wheel or propeller for marine propulsion and the invention has for its principal object to provide a simple, compact and strong construction of paddle-wheeler propeller known as "feathering wheels whereineach blade or paddle is made top'resent its face transverse to the line of motion during some certain part of its revolution, or while such position would assist in propulsiom'and during the balance of its revolution the face of the blade or paddle is turned so as to be in the plane of its rotary movement, and. thus o'fier minimum of resistance. The paddle wh eel or propeller thns operating is intended to be rotated under watery in other words while submerged.

A further object-of the present invention is toprovide such a feathering paddle-wheel or propeller capable-of beingattached to a rowboat or other craft, propulsion of which is desired.

A further object is to provide an improved a Fig. 2 is an enlarged side view thereof;

3 Fig. 3. is anend view on the same scale;

Fig.4 lsa horizontal'sectional view taken generally on line 4,4' of Fig. 2 5- r g- 5&is a-similar view showing a changed position of the propeller blades and Fig. 6 is an enlarged verticalsection showthedrive connection.

Referring to the drawings in Fig. l, I have showna boat or vessel 10 in which a motor (not shown) may be provided-for driving u' the propeller shaft 12 which extends rearwardly from the interior of the boat. @The shaft 12 extends through a supporting bracket 14 from which the propeller unit which formsthe subject matter ofthis inven- I! U011 is supported.

,Thepropeller shaft 12 carries at its extended end a bevel gear .16 locked thereto by the taper pin 18. Thebevel gear 16 is spaced from the bracket" 14 by a suitable spacer'gs' washer 20. Braeket .14fis secured tothe end of boat 10 by suitable bolts 21..

The bracketis adapted to support aplurality of vertically vdisposedtubularshaft v members, and accordingly has 'onearm 22 5,7 extending at right angles at-its upper end, another arm 24 extending at right angles at its lower end. Arm 24 is adapted to beattached to the hub of a stationary gear pinion 26. by suitableifastening means 28.

IA vertical supporting rod is secured through a suitable opening in arm 22 by the bolt andnutconnection 32 and extends downwardly, A pairof gear pinions 34 and, 36 are adapted to be mounted at opposite sides :80 of, and meshing with the bevel gear 16. Pinion 34 is mounted and keyed to a-tubular shaft 3.8whichis mounted on rod 30 and .extends downwardly-l Pinion 36 is likewise provided with an axial bore and is mounted fi upon tubular member 38. Gearpinion 36 has a tubular hub 40 extending downwardly through a suitable opening 42 in the inion '26. Vertical rod 3'llextends downwar y below pinion '26 and carries at its lower end a stationary gear pinion 44 which is fastened to the rod by the set screw'46. Pinion 44 has an upwardly extending hub portion 48 which furnishes a lower abutment forthe tubular member 38. Tubular member 38 carries a collar 50 secured thereto by set screw 52 which forms a lower abutment for thehub portion 40 of pinion 36'. Both hub portion 40 and tubular member 38 have a horizontal stub shaft 54 fastened thereto by setscrews i for the purpose of this disclosure they have been shown substantially as fiat extended paddles having an opening 62 near the hubs 64 of the bevel gears 58.

The operation of my improved propeller means will now be described. hen the shaft 12 is rotated bevel gear 16 will rotate pinions 34 and 36 in opposite directions. These bevel gears carry upon angularly extended stub shafts the large gears 58 and revolve these gears in opposite directions about the same axis.

As these gears 58 are in mesh with the stationary pinions 26 and 44 they will likewise be rotated, as they travel in their path of revolution about their axis.

As shown in Figs. 2, 3, and 4, and indicated by the arrows on Fig. 4 during that part of their rotation shown in Fig. 4 the blades will have a tendency to force water or any other substance in which they may be submerged away from the blades. Thus for example, forcing a boat upon which the unit A may be positioned, forward during that part of their revolution. In Fig. 5 the blades have traveled 180 in their horizontal circular path and have also turned approximately 90 so that when each blade has traveled 270 as shown in the dotted line position the blades will be inclined and during the further 90 rotation they will again assume a vertical position to exert forward push during the next part of their rotation.

Due to the connection between gears 26, 44, and the two gears 58 it can thus be clearly seen that the propeller blades 60 are driven in'opposite directions. That is, one revolves clockwise and the other revolves anti-clockwise, as clearly shown in Figs. 4 and 5. The forward movements of the boat is obtained when the blades 60 are aligned vertically in Fig. 5 as shown in the dotted line and from this point to where they assume a horizontal position, as shown in full lines in Fig. 5.

Thus it will be seen that forward impetus is given to the boat during a portion of the revolution of the blades around their axis.

As clearly shown in the drawings the gears 26 and 44 are exactly the same size, as also are the gears 58, so that the gears 58are both revolved at the same rate of speed. Proportionate sizes of gears 58 as compared to gears 26 and 44 should be such that gears 58 make one-half complete revolution while turning around the axis.

It should be borne in mind that this propeller construction may be employed for example as a fan to propel air through a conduit such as shown at B in dotted line in Fig. 5.

I am aware that some changes may be made in the arrangements and combinations of the various devices and parts, as well as in the details of the construction of the same, without departing from the scope of the present invention as set forth in the foregoing specification and as illustrated in the accompanying drawings, nor do I confine myself to the exact details of the construction of the said parts.

I claim:

1. A feathering wheel of the type described comprising, a vertical supporting rod, a bracket therefor, a stationary pinion secured to the lower end of said rod, :1 similar pinion through which said rod extends mounted above said pinion on said bracket, a pair of tubular shafts, mounted on said rod in axial alignment, a bevel gear carried by each shaft and engaging said stationary pinions, a horizontally extending propeller blade secured to the hub of each of said bevel gears and driving means for horizontally rotating said bevel gears in opposite directions, said blades being adapted to be brought to a feathering position during a portion of each revolution by said stationary pinions.

2. A feathering wheel of the type described comprising, a vertical supporting rod, a bracket therefor, a stationary pinion secured to the lower end of said rod, a similar pinion through which said rod extends mounted above said pinion on said bracket, a pair of tubular shafts, mounted on said rod in axial alignment, a bevel gear carried by each shaft and engaging said stationary pinions. a horizontally extending propeller blade secured to the hub of each of said bevel gears, a collar for vertically positioning said bevel gears, and driving means for horizontally rotating said bevel gears in opposite directions, said blades being adapted to be brought to a featheringposition during a portion of each revolution by said stationary pinions.

3. A feathering wheel of the type described comprising, a vertical supporting rod, a bracket therefor, a stationary pinion secured to the lower end of said rod, a similar pinion through which said rod extends mounted above said pinion on said bracket, a pair of tubular shafts, mounted on said rod in axial alignment, a bevel gear carried by each shaft and engaging said stationary pinions, a horizontally extending propeller blade secured to the hub of each of said bevel gears, a pinion secured to each of said tubular shafts at their upper ends, a bevel gear engaging both pinions for rotating said shafts in opposite directions, said propeller blades adapted to be brought to a feathering position during a part of each revolution by said stationary pinions.

4. A feathering wheel of the type described comprising, a vertical supporting rod, a bracket therefor, a stationary pinion secured to the lower end of said rod, a similar pinion through which said rod' extends mounted above said pinion on said bracket, a pair of tubular shafts mounted on said rod in axial alignment, a bevel gear carried by each shaft and engaging said stationary pinions, a horizontally extending propeller blade secured to the hub of each of said bevel gears, apinion secured to each of said tubular shafts at their upper ends, a bevel gear engaging both pinions for rotating said shafts in opposite directions, a driven shaft secured thereto, said propeller blades adapted to be brought to a feathering position during a part of each revolution by said stationary pinions.

5. A propeller of the type described comprising a supporting bracket, a driven shaft extending therethrough, a bevel gear on said shaft, a pair of pinions engaged by said bevel gear and driven in opposite directions, said pinions secured to telescoped tubular shafts extending downwardly therefrom in axial alignment, a pair of bevel gears rigidly secured to said tubular shafts, propeller blades secured to said bevel gears, and stationary gear pinions: engaging said bevel gears whereby'said blades are rotated around a common axis, and arranged to alternately present their faces to the plane of rotation and lie transverse to the plane of rotation as and for the purpose described.

6. A propeller of the type described prising a supporting bracket, a driven shaft extending therethrough, a bevel gear on said shaft, a pair of pinions engaged by said bevel gear and driven in opposite directions, said pinions secured to telescoped tubular shafts extending downwardly therefrom in axial alignment, a bevel gear rigidly secured to each of said tubular shafts, a propeller blade secured to the hub of each of said bevel gears, a stationary pinion engaging each of said bevel gears, whereby when said blades are rotated around their common axis, the blades are turned to alternately present their faces to the plane of rotations and to lie transversely to the plane of rotation as and for the purpose described.

I afiix my signature.

In testimony whereof JOZEF BAGEL. 

